Heat exchanger capable of automatically adjusting heat exchange area

ABSTRACT

The present invention discloses a heat exchanger capable of automatically adjusting heat exchange area, which relates to the field of heat exchangers. The key points of the technical solution of the present invention include a heat exchange wall, which includes a fixed heat exchange wall, and a self-adjusting heat exchange wall that can automatically expand and contract according to the flow or temperature of the fluid to change the heat exchange area. The present invention can automatically change the heat exchange area, and timely respond and adapt to different working conditions, having simple structure, low production cost and good stability.

FIELD OF THE INVENTION

The present invention relates to the field of heat exchangers, moreparticularly to a heat exchanger capable of automatically adjusting heatexchange area.

BACKGROUND OF THE INVENTION

A heat exchanger is important equipment in energy utilization andmanagement; however, the heat exchanger, usually as a passive component,needs to be driven by the driving components of hot and cold fluids, sothe heat exchange area of the heat exchanger is generally fixed.

The heat exchanger needs to work in a wide flow range of hot and coldfluids, but the heat exchanger with a fixed heat exchange area has alimited range of working conditions.

An existing Chinese patent with the authorized announcement numberCN210892821U discloses a heat pipe heat exchanger with an adjustableheat exchange area, which comprises a box body, a fixed plate, a movingplate, a U-shaped pipe and a corrugated pipe, and can change theposition of the moving plate to change the heat exchange area ratio.

However, the above-mentioned heat pipe heat exchanger with an adjustableheat exchange area still has the following problems: (1) It has complexstructure, high production cost, easy failure and difficult maintenance;and (2) it requires personnel to actively adjust according to theworking conditions, and cannot adapt to the changes of workingconditions in time, increasing the control cost.

CONTENTS OF THE INVENTION

In view of the deficiencies in the prior art, the object of the presentinvention is to provide a heat exchanger capable of automaticallyadjusting heat exchange area, which can automatically change the heatexchange area, and timely respond and adapt to different workingconditions, having simple structure, low production cost and goodstability.

In order to achieve the above object, the present invention provides thefollowing technical solution:

A heat exchanger capable of automatically adjusting heat exchange areais provided, including a heat exchange wall; the heat exchange wallincludes a fixed heat exchange wall, and a self-adjusting heat exchangewall that can automatically expand and contract according to the flow ortemperature of the fluid to change the heat exchange area.

Furthermore, the self-adjusting heat exchange wall is fixedly arrangedon the inner or outer wall of the fixed heat exchange wall, the fixedheat exchange wall being provided with a through hole matched with theself-adjusting heat exchange wall.

Furthermore, the fixed heat exchange wall is provided with a pluralityof the through holes, the self-adjusting heat exchange wall coveringonly one or simultaneously two or more of the through holes.

Furthermore, the self-adjusting heat exchange wall is sandwiched betweentwo layers of the fixed heat exchange wall.

Furthermore, the self-adjusting heat exchange wall is connected betweentwo of the fixed heat exchange walls.

Furthermore, the material of the self-adjusting heat exchange wallincludes rubber.

Furthermore, the heat exchange wall includes a plane wall or a curvedwall.

Furthermore, an elastic member is arranged between opposite two of theself-adjusting heat exchange walls.

Furthermore, at least one surface of the self-adjusting heat exchangewall is provided with an expansion net.

To sum up, the present invention has the following beneficial effects:

1. The self-adjusting heat exchange wall can be used to automaticallychange the heat exchange area, and timely respond and adapt to differentworking conditions, making the heat exchanger have simple structure, lowproduction cost and good stability; and

2. the elastic member or the expansion net can be used to promote thereset of the self-adjusting heat exchange wall, thereby prolonging theservice life of the self-adjusting heat exchange wall; besides, sincethe deformation and expansion capacity of the self-adjusting heatexchange wall is greatly affected by its own material characteristics,the elastic member or the expansion net is provided while the materialof the self-adjusting heat exchange wall remains unchanged, so as tomeet more fluid heat exchange requirements, which is beneficial toadjust the deformation and expansion capacity of the self-adjusting heatexchange wall, i.e., beneficial to adjust the variable range of the heatexchange area.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a heat exchanger capable ofautomatically adjusting heat exchange area according to Example 1;

FIG. 2 is a schematic structural diagram of a fixed heat exchange walland a self-adjusting heat exchange wall according to Example 1;

FIG. 3 is a schematic structural diagram of a fixed heat exchange walland a self-adjusting heat exchange wall according to Example 2;

FIG. 4 is a schematic structural diagram of a self-adjusting heatexchange wall and an elastic member according to Example 3; and

FIG. 5 is a schematic structural diagram of an expansion net and aself-adjusting heat exchange wall according to Example 4.

In the figures: 1. Fixed heat exchange wall; 11. Through hole; 2.Self-adjusting heat exchange wall; 3. Elastic member; 4. Expansion net.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present invention will be further described below in detail withreference to drawings.

These specific examples are only explanation, rather than limitation, ofthe present invention. Those skilled in the art can make modificationsas needed without creative contribution to these examples after readingthis description, the modifications being protected by the patent law aslong as they are within the scope of the claims of the presentinvention.

Example 1

As shown in FIG. 1 , a heat exchanger capable of automatically adjustingheat exchange area is provided, including a heat exchange wall; in thisexample, the heat exchange wall includes a fixed heat exchange wall 1,and a self-adjusting heat exchange wall 2 that can automatically expandand contract according to the flow or temperature of the fluid to changethe heat exchange area; in this example, the self-adjusting heatexchange wall 2 can be used to automatically change the heat exchangearea, and timely respond and adapt to different working conditions,making the heat exchanger have simple structure, low production cost andgood stability; in this example, the self-adjusting heat exchange wall2, having elastic force, can expand and contract, both of which canchange the heat exchange area; preferably, in this example, theself-adjusting heat exchange wall 2 is made of rubber, and can certainlyalso be made of other materials, which is not limited here.

As shown in FIGS. 1 and 2 , specifically, in this example, theself-adjusting heat exchange wall 2 is fixedly arranged on the inner orouter wall of the fixed heat exchange wall 1, the fixed heat exchangewall 1 being provided with a through hole 11 matched with theself-adjusting heat exchange wall 2; if the self-adjusting heat exchangewall 2 is arranged on the outer wall of the fixed heat exchange wall 1,the fluid at the inner side the fixed heat exchange wall 1 contacts theself-adjusting heat exchange wall 2 through the through hole 11, so thatthe self-adjusting heat exchange wall 2 expands and contracts to changethe heat exchange area; if the self-adjusting heat exchange wall 2 isarranged on the inner wall of the fixed heat exchange wall 1, the fluidat the inner side the fixed heat exchange wall 1 contacts theself-adjusting heat exchange wall 2, so that the self-adjusting heatexchange wall 2 expands and contracts through the through hole 11 tochange the heat exchange area; with a cold fluid and a hot fluidrespectively located at the two sides of the self-adjusting heatexchange wall 2, the expansion and contraction of the self-regulatingheat exchange wall 2 includes outward expansion and contraction orinward expansion and contraction according to different fluid states.

As shown in FIGS. 1 and 2 , in this example, the fixed heat exchangewall 1 is provided with a plurality of through holes 11, and theself-adjusting heat exchange wall 2 covers the plurality of throughholes 11, thereby facilitating processing; preferably, in this example,the self-adjusting heat exchange wall 2 is sandwiched between two layersof the fixed heat exchange wall 1 to form a three-layer heat exchangewall, thereby facilitating processing and improving structural strengthand tightness; the heat exchange wall includes a plane wall or a curvedwall to match different types of heat exchangers; of course, in otheroptional examples, the self-adjusting heat exchange wall 2 can also beconnected between two of the fixed heat exchange walls 1, that is, theself-adjusting heat exchange wall 2 is annular as an intermediate pipesection, which is not limited here.

Example 2

The difference between a heat exchanger capable of automaticallyadjusting heat exchange area in this example as shown in FIG. 3 and thatin Example 1 is as follows: In this example, the self-adjusting heatexchange wall 2 only covers one through hole 11 on the fixed heatexchange wall 1; specifically, in this example, both the through hole 11and the self-adjusting heat exchange wall 2 are circular, with thediameter of the self-adjusting heat exchange wall 2 larger than that ofthe through hole 11; preferably, the self-adjusting heat exchange wall 2is arranged on the outer wall of the fixed heat exchange wall 1 tofacilitate installation; in this example, the self-adjusting heatexchange wall 2 can simplify the structure, reduce the cost, facilitatethe installation, and ensure the heat exchange effect of the fixed heatexchange wall 1; specifically, the self-adjusting heat exchange wall 2and the fixed heat exchange wall 1 are fixed together by bonding, andthe fixed heat exchange wall 1 is welded with a fixed ring that tightlypresses the sides of the self-adjusting heat exchange wall 2, so as toimprove the stability and tightness of the connection. Of course, inother optional examples, other connection structures may also be adoptedbetween the self-adjusting heat exchange wall 2 and the fixed heatexchange wall 1, as long as the tightness can be guaranteed.

Example 3

As shown in FIGS. 1-4 , the difference between a heat exchanger capableof automatically adjusting heat exchange area in this example and thatin Example 1 or 2 is as follows: In this example, an elastic member 3 isarranged between opposite two of the self-adjusting heat exchange walls2, and includes a spring or an elastic band; the elastic member 3 can beused to promote the reset of the self-adjusting heat exchange wall 2,thereby prolonging the service life of the self-adjusting heat exchangewall 2; besides, since the deformation and expansion capacity of theself-adjusting heat exchange wall 2 is greatly affected by its ownmaterial characteristics, the elastic member 3 is provided while thematerial of the self-adjusting heat exchange wall 2 remains unchanged,so as to meet more fluid heat exchange requirements, which is beneficialto adjust the deformation and expansion capacity of the self-adjustingheat exchange wall 2, i.e., beneficial to adjust the variable range ofthe heat exchange area; in the initial state, the self-adjusting heatexchange wall 2 connected with the elastic member 3 may be flush withthe fixed heat exchange wall 1, or extend toward the inner side of thefixed heat exchange wall 1, which is not limited here.

Example 4

As shown in FIGS. 1-5 , the difference between a heat exchanger capableof automatically adjusting heat exchange area in this example and thatin Example 1, 2 or 3 is as follows: In this example, at least onesurface of the self-adjusting heat exchange wall 2 is provided with anexpansion net 4; in this example, the expansion net 4 can be used topromote the reset of the self-adjusting heat exchange wall 2, therebyprolonging the service life of the self-adjusting heat exchange wall 2,and can also be used to adjust the deformation and expansion capacity ofthe self-adjusting heat exchange wall 2, i.e., be used to adjust thevariable range of the heat exchange area; compared with the elasticmember 3 in Example 3, the expansion net 4 in this example has theadvantages of convenient installation and replacement.

1. A heat exchanger capable of automatically adjusting heat exchangearea, comprising a heat exchange wall, characterized in that: the heatexchange wall includes a fixed heat exchange wall, and a self-adjustingheat exchange wall that can automatically expand and contract accordingto the flow or temperature of a fluid to change the heat exchange area.2. The heat exchanger capable of automatically adjusting heat exchangearea according to claim 1, characterized in that: the self-adjustingheat exchange wall is fixedly arranged on the inner or outer wall of thefixed heat exchange wall, the fixed heat exchange wall being providedwith a through hole matched with the self-adjusting heat exchange wall.3. The heat exchanger capable of automatically adjusting heat exchangearea according to claim 2, characterized in that: the fixed heatexchange wall is provided with a plurality of the through holes, theself-adjusting heat exchange wall covering only one or simultaneouslytwo or more of the through holes.
 4. The heat exchanger capable ofautomatically adjusting heat exchange area according to claim 2,characterized in that: the self-adjusting heat exchange wall issandwiched between two layers of the fixed heat exchange wall.
 5. Theheat exchanger capable of automatically adjusting heat exchange areaaccording to claim 1, characterized in that: the self-adjusting heatexchange wall is connected between two of the fixed heat exchange walls.6. The heat exchanger capable of automatically adjusting heat exchangearea according to claim 1, characterized in that: the material of theself-adjusting heat exchange wall includes rubber.
 7. The heat exchangercapable of automatically adjusting heat exchange area according to claim1, characterized in that: the heat exchange wall includes a plane wallor a curved wall.
 8. The heat exchanger capable of automaticallyadjusting heat exchange area according to claim 2, characterized inthat: an elastic member is arranged between opposite two of theself-adjusting heat exchange walls.
 9. The heat exchanger capable ofautomatically adjusting heat exchange area according to claim 1,characterized in that: at least one surface of the self-adjusting heatexchange wall is provided with an expansion net.